description: Where a patient is a part of a multiple birth, this is the total number of births that occurred in this pregnancy.\r\rThis value is the 4 in '3 of *4*', and the 3 would be the Patient.multipleBirth value. package_name: hl7.fhir.uv.extensions derivation: constraint name: PatMultipleBirthTotal type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/patient-multipleBirthTotal'} index: 0 value: choices: [valuePositiveInt] index: 2 valuePositiveInt: {type: positiveInt, choiceOf: value, index: 3} package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/patient-multipleBirthTotal base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [valuePositiveInt, value]